/*
 * Copyright 2024 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package androidx.camera.camera2.pipe.internal

import android.os.Build
import androidx.annotation.RequiresApi
import androidx.camera.camera2.pipe.CameraGraph
import androidx.camera.camera2.pipe.StreamGraph
import androidx.camera.camera2.pipe.StreamId
import androidx.camera.camera2.pipe.config.CameraGraphScope
import androidx.camera.camera2.pipe.core.Threads
import androidx.camera.camera2.pipe.media.ImageSource
import javax.inject.Inject

@CameraGraphScope
@RequiresApi(Build.VERSION_CODES.LOLLIPOP)
internal class ImageSourceMap @Inject constructor(
    graphConfig: CameraGraph.Config,
    streamGraph: StreamGraph,
    threads: Threads
) {
    val imageSources: Map<StreamId, ImageSource>

    init {
        imageSources = buildMap {
            for (config in graphConfig.streams) {
                val imageStream = config.imageSourceConfig ?: continue
                val cameraStream = streamGraph[config]!!

                val imageSource = ImageSource.create(
                    cameraStream,
                    imageStream.capacity,
                    imageStream.usageFlags,
                    imageStream.defaultDataSpace,
                    imageStream.defaultHardwareBufferFormat,
                    { threads.camera2Handler },
                    { threads.lightweightExecutor })
                this[cameraStream.id] = imageSource
            }
        }
    }
}
